Document
LYT1402-1604 LYTSwitch-1 Family
Single-Stage LED Driver IC with Combined PFC and Constant Current Output for Buck Topology
Product Highlights
Single-Stage PFC + Accurate CC Output • ±3% CC regulation in single line input voltage applications • Power factor >0.9 • High efficiency >93% • Robust 725 V MOSFET for increased line voltage surge performance • Critical Conduction Mode (CrM) buck • Low EMI • Excellent line noise and transient rejection
Design Flexibility • Supports high- and low-side buck topologies • Wide input (90 VAC – 308 VAC) and output voltage range operation • 3 family members cover power range for optimum device selection • Requires no inductor bias winding
Highest Reliability • Lowest component count • Comprehensive protection features with auto-restart
• Input and output overvoltage protection (OVP) • Output short-circuit protection • Open-loop protection • Advanced thermal control • Thermal foldback ensures that light continues .